How severe is CVE-2021-38121?

CVE-2021-38121 has a CVSS 3.x base score of 8.3, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability low.

Is CVE-2021-38121 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-38121?

CVE-2021-38121 primarily affects Microfocus Netiq Advanced Authentication. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-38121?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2021-38121 have an EU (EUVD) identifier?

Yes. CVE-2021-38121 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2021-24594.

When was CVE-2021-38121 published?

CVE-2021-38121 was published on 2024-08-28 and last updated on 2026-06-17.

CVE-2021-38121

CVE-2021-38121 is a high-severity vulnerability in Microfocus Netiq Advanced Authentication with a CVSS 3.x base score of 8.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-326.

Key facts

Severity: High (CVSS 3.x base score 8.3)
EPSS exploit prediction: 0% (7th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2021-24594
Weakness: CWE-326
Affected product: Microfocus Netiq Advanced Authentication
Published: 2024-08-28
Last modified: 2026-06-17

Description

Insufficient or weak TLS protocol version identified in Advance authentication client server communication when specific service is accessed between devices. This issue affects NetIQ Advance Authentication versions before 6.3.5.1

Frequently asked questions

What is CVE-2021-38121?: Insufficient or weak TLS protocol version identified in Advance authentication client server communication when specific service is accessed between devices. This issue affects NetIQ Advance Authentication versions before 6.3.5.1
How severe is CVE-2021-38121?: CVE-2021-38121 has a CVSS 3.x base score of 8.3, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability low.
Is CVE-2021-38121 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-38121?: CVE-2021-38121 primarily affects Microfocus Netiq Advanced Authentication. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-38121?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2021-38121 have an EU (EUVD) identifier?: Yes. CVE-2021-38121 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2021-24594.
When was CVE-2021-38121 published?: CVE-2021-38121 was published on 2024-08-28 and last updated on 2026-06-17.

References

https://www.netiq.com/documentation/advanced-authentication-63/advanced-authentication-releasenotes-6351/data/advanced-authentication-releasenotes-6351.html

Affected products (8)

cpe:2.3:a:microfocus:netiq_advanced_authentication:*:*:*:*:*:*:*:*
cpe:2.3:a:microfocus:netiq_advanced_authentication:6.3:-:*:*:*:*:*:*
cpe:2.3:a:microfocus:netiq_advanced_authentication:6.3:sp1:*:*:*:*:*:*
cpe:2.3:a:microfocus:netiq_advanced_authentication:6.3:sp2:*:*:*:*:*:*
cpe:2.3:a:microfocus:netiq_advanced_authentication:6.3:sp3:*:*:*:*:*:*
cpe:2.3:a:microfocus:netiq_advanced_authentication:6.3:sp4:*:*:*:*:*:*
cpe:2.3:a:microfocus:netiq_advanced_authentication:6.3:sp4_patch1:*:*:*:*:*:*
cpe:2.3:a:microfocus:netiq_advanced_authentication:6.3:sp5:*:*:*:*:*:*

More vulnerabilities in Microfocus Netiq Advanced Authentication

CVE-2023-24468 — Critical (CVSS 9.8): Broken access control in Advanced Authentication versions prior to 6.4.1.1 and 6.3.7.2
CVE-2021-22530 — High (CVSS 8.2): A vulnerability identified in NetIQ Advance Authentication that doesn't enforce account lockout when brute force attack…
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CVE-2022-38753 — Medium (CVSS 6.3): This update resolves a multi-factor authentication bypass attack
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